error installation

I have an error when trying to install using pip3 install .

Processing /media/superdisk/edna/training/vmarques/custom_reference_database

Collecting PyQt5 (from mkbdr==1.0.1)
  Using cached https://files.pythonhosted.org/packages/8e/a4/d5e4bf99dd50134c88b95e926d7b81aad2473b47fde5e3e4eac2c69a8942/PyQt5-5.15.4.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/usr/lib/python3.7/tokenize.py", line 447, in open
        buffer = _builtin_open(filename, 'rb')
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-build-_4w3l78w/PyQt5/setup.py'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-_4w3l78w/PyQt5/